While both iPad and iPad Mini have their own version of the Smart Cover, the iPhone resists this accessory. The Apple phone is much smaller and more portable and a cover of this type lacks its meaning, even more so when it is not used as a support and remains hanging, disturbing the user who wears it.
For the iPhone 4 and iPhone 4S we saw a Smart Cover concept that the designer Adrien Olczak has also wanted to transfer to the iPhone 5. We are not going to deny that aesthetically it is very pleasant and that it feels great but today it is not feasible to make such an accessory for iPhone.
As you know, the Smart Cover makes use of magnets to adhere to the side of the device and to activate or deactivate the screen when we open and close the cover. No iPhone to date incorporates the necessary magnets for there to be attraction, therefore, it is not possible to make a smart cover like Apple's. Maybe in the future ...
More information - Keyboard concept for iPhone 4 based on the Smart Cover design
Source - iClarified
Instead of magnets, they could make it with an adhesive that resembles the magnet and thus be able to enjoy a smart cover for iphone 5.
Exactly, that accessory exists for the iPhone 4 / 4s.
I have it on, it goes with a magnet that sticks to the iphone and then the smartcover itself.
Very practical to place it on the bedside table, metal slates… ..